[PATCH 2/2] NFS: Limit the number of retries

[Wenle Chen]

  We can't wait forever, even if the state
is always delayed.

Signed-off-by: Wenle Chen <chenwe...@huawei.com>
---
 fs/nfs/nfs4proc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index f6b5dc792b33..bb2316bf13f6 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -7390,15 +7390,17 @@ int nfs4_lock_delegation_recall(struct file_lock *fl, 
struct nfs4_state *state,
 {
        struct nfs_server *server = NFS_SERVER(state->inode);
        int err;
+       int retry = 3;
 
        err = nfs4_set_lock_state(state, fl);
        if (err != 0)
                return err;
        do {
                err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
-               if (err != -NFS4ERR_DELAY)
+               if (err != -NFS4ERR_DELAY || retry == 0)
                        break;
                ssleep(1);
+               --retry;
        } while (1);
        return nfs4_handle_delegation_recall_error(server, state, stateid, fl, 
err);
 }
-- 
2.29.1